/*
package demo1;
public class Test{
    public static void test1(Animal animal){
        animal.eat();
    }
    public static void test2(IRunning iRunning){
        iRunning.run();
    }
    public static void test3(ISwimming iSwimming){
        iSwimming.swim();
    }
    public static void test4(IFlying iFlying){
        iFlying.fly();
    }
    public static void main(String[] args) {
        Bird bird = new Bird("小鸟",1);
        Dog dog = new Dog("小狗",2);
        test1(bird);
        test1(dog);
        test2(bird);
        test2(dog);
        test3(dog);
        test2(new Robot());
    }
}*/
